Marks on cylinder

[logogasgas]

I just bought a 2024 EC 300, and I'm am installing a new medium TSP head. When I took the original head off, I found this mark in the cylinder. the bike only has 1 hour 16min on it. ?????

 

[cbutler]

That doesn't look good, can you feel it?

 

[logogasgas]

That doesn't look good, can you feel it?

Barely with my fingernail towards the top of the cylinder.

 

[(F5)]

That sucks. Something has been posted out the transfer and not quite made it so been scraped up wall.

So what was it is the difficult question .

I'd check ring ends and seriously flush the bottom end.

A more conservative approach would be strip, but I wouldn't.

Then get barrel assessment it can hone for big piston.

 

[logogasgas]

That sucks. Something has been posted out the transfer and not quite made it so been scraped up wall.

So what was it is the difficult question .

I'd check ring ends and seriously flush the bottom end.

A more conservative approach would be strip, but I wouldn't.

Then get barrel assessment it can hone for big piston.

I've been told the nicaseal is not thick enough to hone.

 

[(F5)]

Now I'm not on my phone I see its exhaust not transfer. Not that it changes anything.

So it's either, debris from build. A bit of the ring or bearing cage. Or it got past the airfilter.

I mean the scrape won't bother it running, but it's like starting off with a ring on wear limit.